\begin{tikzpicture}
    \tkzDefPoints{0/0/O, 3.5/0.5/P}
    \tkzDefPoint(0:1.5){T}

    \tkzDefMidPoint(O,P)  \tkzGetPoint{Q}
    \tkzInterCC(O,T)(Q,P)  \tkzGetPoints{A}{B}
    \tkzDefPointOnLine[pos=2](A,O)  \tkzGetPoint{C}

    \tkzDrawCircle[thick](O,A)
    \tkzDrawPoint(O)
    \tkzDrawSegments(A,C  A,B  P,A  P,B)
    \tkzLabelPoints[left](O)
    \tkzLabelPoints[right](P)
    \tkzLabelPoints[above](A)
    \tkzLabelPoints[below](B)
    \tkzLabelPoints[below](C)
\end{tikzpicture}

